Jacob jacobs



(Model.)

J. JACOBS.

` ILLlrlvtmiwlhm- CTRATINGl- No. 265,090. 'Patented Sept. 26, 1882.

UNITED STATES PATENT OFFICE.

JACOB JACOBS, OF NEW YORK, NfY.

ILLUMINATING-GRATING.

SPECIFICATION forming part of Letters Patent No. 265,090, dated September 26, 1882.

- Application filed October 13, 1880. `(Model.)

To all whom it may concern Be it known that I, JACOB JACOBS, of New York, in the county of New York, and in the State of New York, have invented certain new and usefullmprovementsin Illuminating-Gratings, and-I do hereby declare that the following is a full, clear, and exact description thereof, reference being had tothe accom panyin g drawings, making a part ot' this specification, in which- Figurel is a perspective view of the upper side of my improved tile, and Fig. 2 is a like view of the lower side of the same.

Letters of like name and kind refer to like partsin each ofthe figures.

The design of my invention is to secure a maximum of strength by use ot' a given weight of metal, and to enable a larger number of illuminating-lenses to he placed in a given area than has heretofore been practicable, to' which end it consists in an illuminating-grating having its face recessed for the reception ot a nonslippery filling, provided with light-openings which are arranged in rows, and the openings ofcontiguous rows dodged, and having between said openings vertical intersecting anges, which are each arranged at right angles to the radius of two of the same, substantially as and for the purpose hereinafter specitied, In the anneXeddrawings,A represents ametallic plate, having any desired size or horizontal shape, and provided around its edge with a vertical flange, a. Within the plate or grating A are provided a number of light-openin gs, a', which are arranged in rows, and the openings' of contiguous rows dodged or caused to alternate, by which arrangement said openings are brought closely together andare all equidistant from the adjacent openings. Between each pair of openings a is provided a flange, a, which is cast upon and extends upward from the grating A, and is arranged at a to be placed over cach opening af, and they may be made Hush with the flange a, so as to form part ot' the walking-surface ot' the completed grating or tile; or they may have their upper edges below said tiange and be covered entirely with and hidden hy plastic'material. It is believed that there is no other form in which a given quantity of metal can be fashioned that will insure an equal amount ot' vertical strength in a tile or grating.

` I am aware that gratings have before been used in which the light-openings have been dodged and the upper recessed snrt'ace has 'been filled with a non-slipping filling, and

therefore do not claim such features.

Having thus fully set t'orth the nature and merits ot' my invention, what I claim as new 1s- An illuminating-grating having its face recessed forthe reception ofa non-slippery filling, provided with.i light-openings which are arranged in rows, and the openings of contiguous rows dodged, and having between said openings Vertical intersecting flanges, which are each arranged at right angles to the radius of two ofthe same, substantially as and tor the purpose specited.

In testimony that [claim vthe foregoing I have hereunto set my hand this 27th day ot' September, 1880.

JACOB JACOBS.

Witnesses:

D. G. BEECHING, MICHAEL A. KOFEMAN. 

